(21350) Billgardner Main-belt Asteroid
Discovered on 11 March 1997 by Spacewatch at Kitt Peak.
William David Anstruther Gardner (b. 1974) is an amateur astronomer in Ingersoll, Ontario, active in the Royal Astronomical Society of Canada, London Centre. Name suggested by R. and P. Jedicke.Naming citation (MPC batch dated 2016-06-20), IAU / Minor Planet Center, via NASA/JPL
Where Billgardner is today
Seen from above the solar system on 2026-10-14: Billgardner is 2.59 au from the Sun and 1.60 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21350 |
| Provisional designation | 1997 EN32 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.19 km (#14,734 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.229 |
| Absolute magnitude (H) | 14.9 |
| Orbital period | 4.49 years |
| Semi-major axis | 2.72 au |
| Perihelion – aphelion | 2.48 – 2.96 au |
| Eccentricity | 0.0886 |
| Inclination | 4.03° |
| Closest distance between its orbit and Earth's (MOID) | 1.50 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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